Projection apparatus



Dec. 14, 1937. D, W A 1 2,102,161

PROJECTION APPARATUS Original Filed Aug. 12, 1932 2 Sheets-Sheet l N INVENTOR 32a, 31 David F Ne Wman W, M v- M ATTORN EYS Dec. 14, 1937. F NEWMAN 1 2,102,161

PROJECTION APPARATUS Original FilecLAug, 12, 1932 2 Sheets-Sheet 2 INVENTOR BY David 1 7 New/zeal M, [91% 9- M ATTORN EYS REISSUED Patented Dec. 14, 1937 AUG 1219 lATENT OFFICE PROJECTION APPARATUS Delaware Application August 12,

1932, Serial No. 628,529

Renewed May 13, 1937 3 Claims.

My invention relates generally to projection apparatus of that type wherein a character-bearing tape is drawn through a projection field at a rate varying in accordance with the rate of tape ejection from a suitable printing device.

My invention has particular reference to a novel projection field per se of projection apparatus of the character stated.

Various other objects, advantages and charsm acteristics of my invention will become apparent 20' Figure 1 is a front elevational view, partly in section, of a projection system as constructed in accordance with my invention;

, Fig. 2 is a transverse vertical sectional view,

partly in elevation, of a part of the mechanism 25 shown in Fig. 1;

Fig. 3 is an enlarged vertical sectional view of the projection field arrangement shown in Fig. 1;

Fig. 4 is a transverse vertical sectional view of the arrangement shown in Fig. 3;

Figs. 5 and 6 are transverse and longitudinal vertical sectional views, respectively, of a modified form of projection field arrangement;

Figs. 7 and 8 are transverse and longitudinal vertical sectional views, respectively, of another 35 modified form of projection field arrangement;

Figs. 9 and 10 are transverse and longitudinal vertical sectional views, respectively, of another modified form of projection field arrangement; and

40 Figs. 11 and 12 are transverse, vertical sectional views showing further modifications of the invention. 4

Referring to Fig. 1, A represents any suitable printing device which, as herein shown, may be 45 a stock tickermechanism of a type well known to the art. A ticker mechanism of this type com-' prises a; printing wheel i and a movable platen 2 by which characters are printed lengthwise of a tape T which is intermittently ejected from 50 the ticker mechanismin accordance with the rate of printing. 2

After ejection from the ticker mechanism, the tape T, in accordance with the invention of this application, is drawn through the projection;

55 field of any suitable projector B which, in the example shown, is generally of the character described in the copending Halloran application Serial No. 373,7 67, filed June 26, 1929, now Patent 1,952,249. When of this character, the projector B comprises a base 3 from which rises a stand- 5 ard 4 carrying a housing 5 which, in turn, supports a standard 6 on which an objective lens 1 is mounted. Light from any suitable source 8 passes horizontally through one element of a condensing lens system, not shown, then engages a 10 mirror 9 by which the light beam is deflected upwardly to pass first through another element of the condensing lens system and then through the projection field together with the tape section disposed therein, the light beam thereafter traversl5 ing the objective lens 1 and then, by any suitable reflecting system, not shown, passing to a suitable screen on which appear images of the tape-borne characters then in the projection field.

The tape T may be pulled through the projection field by any suitable mechanism, and this mechanism may be controlled in any suitable manner so that the tape movement through the projection field is approximately proportional to the rate of ejection thereof from the ticker mechanism.

As herein disclosed, there is thus utilized an electric motor l0 which, through suitable gearing, operates an endless belt ll mounted on pulleys l2 and ii. The pulley I3 is pinned to a shaft l4 rotatably mounted in bearings formed in an extension l5 of the housing 5. Mounted for free rotatable movement on the shaft H is a tape-pulling roll it which, as hereinafter described, is connected to the shaft H for rotatable v movement therewith by clutch mechanism of any suitable character. As herein diagrammatically illustrated, said clutch mechanism comprises a I helical spring H which is interposed between one face of'the roll it and one face of an adjacent 40 disk ldpinned to the shaft M for rotatable movement therewith. Coactablewith the roll it is a roll I! carried by a pivoted arm 20 which is biased in a counter-clockwise direction, Fig. 1, by a suitable spring 21. 5 The tape T, after leaving the projection field, passes around an idler roll 22, then between the meeting pair of rolls it and Il then around another idler roll 22, and then is w'dund upon a reel 23 rotatably mounted on a shaft 2| jo'urnaled in 5 an extension of the frame II. The shaft 24 is operated by an endless belt 25 mounted on pulleys 28 and 21, the pulley 28 being pinned to the hereinbefore described shaft l4 and the pulley llbeing pinned to the shaft 24.

Disposed at the entrance to the projection field is an arrangement of any suitable character for applying a retarding or binding force to the tape T each time that the operation of the ticker mechanism is discontinued, it being understood that mechanisms of this character operate irregularly and at a rate dependent upon the activity of the stock exchange dealings. In the example shown, there is thus utilized an arrangement of the character disclosed in the copending Ca'valcante application Serial No. 596,143, filed March 1, 1932, such arrangement comprising a frame including a vertical plate 28 from which extends an upper horizontal and downwardly curved plate 28a forming a support for the, tape T just prior to passage thereof into the projection field. The plate 28 comprises a lower section 2% interiorly formed with a curved passageway adjacent which the tape passes during operation of the tape-pulling mechanism; Suitably secured to opposite faces of the plate 28 are members 29 each of which, on the lower interior surface thereof, carries a member 30 more or less wedge-shaped with the apex of the wedge directed toward the projection field. The members 30 are spaced apart, opposite edges of the tape T being coactable therewith in the manner hereinafter to be described.

In accordance with my invention, a projection field of novel character is utilized with the hereinbefore described projector. One form of this novel projection field is shown in Figs. 1, 3, and 4 wherein there is illustrated lower and .upper plates 3| and 32 supported in suitable manner preferably horizontally, the lower plate 3! preferably resting upon suitable ledges .33 of the projector housing 5 and the upper plate 32 prefer-' ably resting upon the lower plate 3!.

The plates 3! and 32 are formed from glass or other suitable transparent material and, as shown in Fig. 4, the width thereof exceeds that of the tape T. In accordance with a preferred form of the invention, the plates 81 and 32 form with each other a channel 34 only slightly greater in width and height than the respective corresponding dimensions of the tape T.

With the tape T positioned as shown in Fig. 1, it. will be observed that said tape extends from the ticker mechanism around the members 30, vertically along the plate 28, horizontally along the plate 280, between the upper and lower plates 32 and 3i, and then through the pulling mechanism and onto the reel 23 in the manner hereinbefore described. l

Themotor I0 is one which operates continuously to cause continuous rotation of the shaft l4. As shown, the tape T has been drawn into binding relation with respect to the members 30 and,

as av result, a retarding force is,applied to said tape whereby it is placed under tension. r When the tape is thus retarded or placed under tension, the pulling roll l6 slips with respect to the shaft 14, the spring I] being so designed that it beeliminated.j As a result, the tension on the tape tape is drawn through the projection field until operation of the ticker mechanism is again discontinued whereupon the cycle of operations herelnbefore described again occurs.

While passing through the projection field, the I tape T traverses the channel it formed by the members 3! and 32. As stated, the dimensions of this channel are slightly greater than those of the tape '1 and, therefore, the tape passes freely therethrough. In a preferred form of the invention, these dimensions are only slightly greater than those of the tape T and, therefore, said tape moves along the channel 34 regularly, evenly and without any substantial vibrations such as might otherwise be transmitted thereto due to the pulsing action of the ticker mechanism. Since the members 3! and 32 are formed of glass or other transparent material, it results that the projecting light beam .readily traverses the same .to effect clear and efiicient projection of the characters on the tape '1.

As shown particularly in Fig. 4, it is highly desirable for the upper plate 32, intermediate the longitudinal sides thereof, to have a rib 32a which projects toward the plate 3|. tween the rib 32a and the plate 3! is preferably only slightly greater than the thickness of the tape T although this relation maybe varied somewhat as desired. It is well understood in the art that characters .on a ticker tape are printed in two longitudinal rows slightly spaced apart. The

rib 32a is so disposed that it is directly above the space between the two rows of printed characters and its function is to retain the tape toward the plate 3! so;;that the upper tape. surface does not contact with the lower surface of the plate 32. Should thelatter happen, smudging of the ink forming the tape characters might occur, this, of course, being highly objectionable from a pro= jection viewpoint.

In the form of myinvention ilustrated in Figs. 5 and 6, the lower and upper members forming the channel 34 traversed by the tape '1 while passing through the projection field are designated at 35 and 36. The upper member 36 is substantially the same as the hereinbefore described upper member 32 but the lower member 35 has a lens effect and, more particularly, a condensing lens efl'ect. .Under some circumstances, it is advantageous to thus combine a lens with the tape-guiding arrangement. 7

Referring to Figs. 7 and 8, lower and upper ill The distance be members 31 and 38 are shown as utilized for forming the aforesaid channel 34. In this form of the invention, the member 31 has a lens effect and particularly a-condensing' lens effect, while the member 38 functions as a magnifying lens.

the power of which is properly related to focallength of the objective lens included in the projection system;

The modification shown in Figs. 9 and 10 is explanatory of another variation of the inven-' tion. The lower member 39 of Figs. 9'and 10.

corresponds generally with the upper member 38 of Figs. 5 and 6 while the upper magnifying lens member 40 of Figs. 9 and 10 corresponds gener ally with the lens member 38 of Figs. 5 and 6.

In Fig. 11, there are illustrated upper and lower members 4| and 42 which form the hereinbefore described channel 34. Said members H and 42 may correspond with the members 3| and 82 of Fig. 3 or either or both of them may have nice,

o. lensefiect so desired and as lcereinlieiere de scribed. This figure, namely, ii is iliustrm tive at it oi. one of the money forms of inter= locking joints which may be protideol, if desired,

for any of the herein described sets oi members forming a tape guide channel cc.

In Figs. 1, 8, end 4, the channel lid is shown as hitting e single rile 3% extending tlierelnto whereas, in Figs. E il inclusive, seicl clicnmcl t l,

in a, slightly modified form, if desired, it on as nt tooth sides oi ,e-ir oi facing til, tile formed on the respective opp-e? lower tape-guiding memloens. It slmll Toe that the cliennel ccnfieuretion oi end i may ice employed with the crccngeme shown in Figs. 541 inclusive or vice verso as In 12, there is lilustmtetl nnctiier tone channel variation. in 12, the upper meni= icer it is ion-med symmetrical s I feces Cite, tlie upper sm iece oi lower member t ll being oi pione configuration. slicll ice understood that the uppee and tape gel e members oi Fig. l2 ineylce e15 lens or nonlem character as desired.

As liereiniieiore stated, time ciiennel BL pref erebiy lies dimensions slightly create? then those of the tape T. In practice, if desired, ar rengement may be varied by providing the clinn= nel 3d witlidimensions sufiiciently smell to insure n frictional drag on the tape somewhet greater than that caused by the mere notion oi gravity clone.

It shall be understood that either or izctii oi the upperend lower members forming the channel 3t new be of skeleton configuration so that little or no material is interposed in tile petn oi' the projecting light beam. Furtl'ier, it elmll ice understood that said upper and lower cliennei forming members need not be separately formed since a desired arrangement, in accordance with my invention, may be cute-med from is single structural unit. Still further, the channel totining members or structure at the surfaces overand under-lying opposite longitudinol edges oi the tape may be formed of opaque mnterim if desired. I

Although I have shown a particular arrangement for controlling movement 01' the char-eaten bearing tape through the projection field, it shall be understood that my invention is not to be so limited because other equivalent tape pulling ar 'rangementsfmay be employed. Thus, forlexam ple, the well-known commercial lever or suction control arrangements may be utilized for star-t ing and stopping an electrical motor so that the tone is through the protection field epprommetely proportional to the rate of election thereof the ticker mechanism.

While invention has been described with respect to certain particular preferred encmplw which satisfactory results, it will be understood by those skilled in the art after understand the invention, tliet various changes and modificctions may be made without departing from the and scope oi the invention end it is therefore in the appended claims to coves oil such changes end modifications.

cleinied as new and desired to ice secured Fetent is:

l. A structure forming a projection field which 2. cherocter=beering tape is drawn alter election from o. printing mechanism, sold structure comprising members spaced apart to term n tiiere oetween for the passage oil said tape, and e rib immoveloly fixed to end peoiectironi one of sold members toward the other member, riio extending longitudinally of said one me and being disposed substantially at the center thereof so as to be oriented to engage the tape substantially at its longitudinal centee and hold the tone toward said other member, said strectine being transparent to light throughout substantially the entire length thereof.

2. A structure forming a proiection field through which is drawn a tape having characters printed thereon in ink by a printing mechanism, seicl structure comprising members spaced apart to form n patio therelcetween for the passage of said tape, and means fixed to and projecting from one of sold members toward the other member, seid ccecting with said tape to hold it toward sold other member whereby smudging oi the inl: on said tape is substantially prevented, said sti-uctme transparent to light throughout suustentieliy the entire length thereof.

' 3. A, structure forming a projection field through which a character-bearing tape is drawn after election from a printing mechanism, said device comprising a supporting member for said tape on it passes through said projection field,

and e fixed rib-like member extending toward said supporting member but spaced therefrom a. distance greater than the thickness 01 said tape, sold rile-like member extending longitudinally through said projection field and being so disposed with respect to the tape path that it is adapted to engage the tape substantially at its longitudinal center.

DAVID F. NEWMAN. 

